Write a java program to design a screen with two buttons “start thread” and “stop thread”. Clicking on start ,it should start printing”Thread running” until stop button is pressed.

import java.awt.*;

import java.awt.event.*;


public class slip19 extends Frame implements ActionListener,Runnable

    {

    Button start,stop;

    TextField tf;

    int x=0,y=0;

     String msg="";

    Thread t1=new Thread(this);


    public slip19()

    {

    setLayout(new FlowLayout());

    start=new Button("start");

    stop=new Button("stop");

    add(start);

    add(stop);

    start.addActionListener(this);

    stop.addActionListener(this);

    addWindowListener(new WindowAdapter()

    {

     public void windowClosing(WindowEvent e)

    {

    System.exit(0);

    }} );

    setSize(200,200);

    setVisible(true);

    }

    public void actionPerformed(ActionEvent ae)

    {

     Button btn=(Button)ae.getSource();

     if(btn==start)

    {

     t1.start(); }

    if(btn==stop)

    {

    t1.stop(); }}

    public void run()

    {

     try

    {

     while(true)

    {

     repaint();

    Thread.sleep(350);

    }}

    catch(Exception e)

    {}}

    public void paint(Graphics g)

    {

    msg=msg+"thread running";

    g.drawString(msg,10,y+=10);

    }

    public static void main(String args[])

    {

    new slip19();

    }}